diff --git a/Gemfile.lock b/Gemfile.lock
index 550ccf3..5e551bb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -33,10 +33,12 @@ GEM
     arel (2.2.1)
     builder (3.0.0)
     columnize (0.3.4)
+    concurrent-ruby (1.1.5)
     diff-lcs (1.1.3)
     erubis (2.7.0)
     hike (1.2.1)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     json (1.6.1)
     linecache19 (0.5.12)
       ruby_core_source (>= 0.1.4)